Shiplapping machine



Nov. 30, 1943. P. H. KlNPoRTs 2,335,768

SHIPLAPPING MACHINE Filed June 17, 1942 2 Sheets-Sheet l [NI/ENTOE PaulH Kim was 3 WM Nov. 30, 1943'. P. H. KHNPORTS SHIPLAPPING MACHINE FiledJune 1?, i942 JLJEJ 2 Sheets-Sheefi 2 5y WM Patented Nov. 30, 1943UNITED STATES PATENT OFFICE SHIPLAPPING MAonn-IE Paul H. Kinports,International Falls, Minn, as-

signor to Minnesota and Ontario Paper Company, Minneapolis, Minn. v

Application June 17, 1942, Serial No. 447,347

(Cl. 144r90) 4 Claims.

This invention relates to the art of grooving and. rabbeting apparatusand more particularly aims at means for providing grooves in compositionboards to enable their assembly in lap-joint arrangement.

An important object of the invention is to provide means whereby boards,which have been previously cut to required rectangular dimensions,

may be simultaneously provided with the usual rabbets by means of whichthe assembly of composition board for wall and the like covering isused.

It is also an object to provide certain features of construction andarrangement tending to enhance the utility and emciency of a machine ofthe character described.

With these and other equally important objects in view, which willbecome apparent from a perusal of the invention, the latter comprisesthe means described in the following specification, particularly pointedout in the claims forming a part hereof, and illustrated in theaccompanying drawings, in which:

Figure 1 is a front elevational view of the new rabbeting and groovingapparatus;

Figure 2 is a plan view of the same;

Figure 3 is a side elevational View of the same;

Figure 4 is a view taken on lines 44 of Figure 1;

Figure 5 is a view of the board discharge means from the board receivingof the second table;

Figure 6 is a view taken on line 6-6 of Figure 5.

Referring to the drawings in detail there is shown a table or frame withmeans for moving board longitudinally thereof and means positioned alongthe path of travel for rabbeting boards along their ends, and a secondtable or frame in alignment with the first table which receives boardfrom the first table. Mounted on the second table are means for feedingboard toward either end thereof and means positioned in the path oftravel of the board on the second table for rabbeting the board on thesides.

The first table comprises cross members l generally in the form ofchannel irons, longitudinal members I2 which are spaced apart andsuitably secured to the cross members I9, and upright members ll.Mounted at one end of the first table is a shaft which carries sprocketwheel 42, adapted to drive from a suitable source of power, and on thesame shaft are sprocket wheels [5. At the other end of the table ismounted sprocket wheels I6. Carried by sprocket wheels I and I 6 arechain or other suitable endless conveyors it which are adapted to carryboard across the first table. Members I 4 are secured to the table andserve as covers for sprocket wheel l6 and conveyors at the receiving endof the table. Removably secured to the conveyors I3 are pusher membersI! for causing the board to move along with the conveyor in fixedrelation to the conveyor.

Motors it are provided for driving cutters, for example, saws or knives,for rabbeting or grooving boards on their ends as they are conveyedacross the first table. In rabbeting board more or less dust is producedand such dust is gathered by members [9 and carried away by conduits 44and 45.

The boards are carried by the conveyors l3 until they reach the wringerrolls 30 and 3| which advance and discharge the board into bin orwork-receiving means on the second table. The boards discharged by rollsand 3| strike levers 52 which are mounted on slide plates 48. Theselevers force the boards back against the middle of the roll 30 as astraight edge thus aiding in properly aligning of the board forreceiving the rabbets along their edges.

The boards in bin 25 are started on their discharge path by means of apin 5! which is mounted on slide plate 48. As shown inFigure 5 the pin5| mounted in one of the slide plates is positioned closer to the loweredge of the plate than the other pin 5i which is positioned in the otherplate 48. The lowest positioned pin 5| lays behind the end edge of thebottom board and the other pin 5| lays behind the end edge of the nextboard. One pin 5! starts one board from the bin'toward one end While theother pin 5| starts another board from the bin 25 toward the other endof the second table.

As shown in Figure 6 the members 29 are provided with channels in whichplates 48 are adapted to slide starting board from the bin 25. Theplates 48 have a vertically extending opening 50 near one end andextending through these openings are pins 49. Pins 49 are carried bysprocket chains 54 and 55 and upon the movement of the chains 54 and 55cause the plates to reciprocate. The sprocket chains 54 and 55 aremounted on idler sprockets and on driven sprockets 41. The drivensprockets 41 receive their movement through an arrangement whichincludes sprocket Wheels 38, chains 39, drive belts 4| and motor 40.

Mounted at one end of the bin 25 is a pair of wringer rolls 3'! and atthe other end of the bin is mounted pair of wringer rolls 36. The secondtable or framejncludes cross members 24 and longitudinally extendingmembers 53. Positioned at the opposite ends of the second table areworkreceiving means comprising bed members 26, back board 46 and uprightmembers 23.

The boards started from bin 25 in one direction are advanced by rolls 36and conveyor 58 past cutters driven by motor 21. The cutters rabbet theside edges of the board as they are being advanced. At the same timeanother board from bin 25 is being advanced by rolls 3'! and conveyor 59past rabbeting means driven by motor 28.

Any dust produced by rabbeting means along the edges of the board iscollected by dust collector members it and carried away by conduits 43and 45.

In operation a supply of board is placed on the first table againstbacking board 35, the pusher blocks H on the conveyors it take thebottom board from the supply of board and carry the board across thetable. The boards as they travel across the table are held down byspring members 35': mounted on shaft 34 which extends across the table.The conveyors i3 carry the board-past cutting means which rabbet theboard on their ends. The wringer rolls 39 and 3| continue to advance theboard and discharge it into bin 25. The conveyors iii and wringer rolls3i! and 3! travel at substantially the same speed which is substantiallytwo times the speed of wringer rolls 3i; and 37 and conveyors 58 and 51.

The first board discharged into the 25 rests upon the bin bottom and oneof board starting pins 55 is behind the end of this bottom board. Thenext board discharged into the bin rests upon the first board in the binand the other board starting pin 5i is behind the end or" the secondboard. Two boards are discharged from the bin at the same time, one fromeach end thereof.

As the two boards are being discharged from the bin, two more boards arereceived from the wringer rolls M and 3!. The board received in the bin25 while the two boards are being discharged do not take the positionwhere pins 5! can start them on the discharge path until the first twoboards have been discharged by the wringer rolls 3% and 37.

The entire apparatus is mounted on suitable rollers such as 25, El and22, so that it can readily be moved from place to place as the needarises.

What I claim is:

1. A rabbeting apparatus including a table, means for causing boards totravel longitudinally of said table and wringer rolls for dischargingthe board at one end of said table, means positioned along the path oftravel of th board for rabbeting the ends thereof; a second tablearranged transversely of the discharge end of said first table, abin-like member on said second table located centrally thereof and inalignment with said first table for receiving boards therefrom, wringerrolls positioned at the opposite ends of said bin for feeding boardtoward either end of said second table, means for projecting boards fromsaid bin into said last-mentioned wringer rolls, means for carrying theboard away from the wringer rolls, and means positioned along each endof said second table to engage the board as they travel therealong forrabbeting the boards on the sides.

2. A rabbeting apparatus including a table, conveyors for moving theboard longitudinally of said table, and rolls for discharging the boardsat one end of said table, means positioned along the path of travel ofthe board for rabbeting the ends thereof, a second table arrangedtransversely of the discharge end of said first table, a binlike memberon said second table located centrally thereof and in alignment withsaid first table for receiving boards therefrom, a pair of rollspositioned at opposite ends of said bin for feeding board toward eitherend of said second table, movable pins for projecting boards from saidbin into the last-mentioned rolls, means for carrying the boards awayfrom the wringer rolls, and means positioned along each end of saidsecond table to engage the board as they travel therealong for rabbetingthe board on the sides.

3. A rabbeting apparatus including a table means for causing boards totravel longitudinally of said table and wringer rolls for dischargingthe boards at one end of said table, means positioned along the path oftravel of the board for rabbeting the end thereof, a second tablearranged transversely of the discharge end of said first table, abin-like member on said second table located in alignment with saidfirst table for receiving boards therefrom, apair of rolls positioned atopposite ends of said bin for feeding boards toward either end of secondtable, movable means for projecting boards from said bin into thelastmentioned rolls, and conveyors for carrying boards away from thewringer rolls, and cutting means positioned along each end of saidsecond table to engage the boards as they travel therealong forrabbeting the board on the sides.

4. A rabbeting apparatus including a table, means for causing boards totravel longitudinally of the table, means positioned along the path oftravel of the board across the table for rabbeting the ends of theboard, a pair of rolls for discharging board at one side of the table, asecond table arranged transversely of the discharge end of the firsttable, a work-receiving means on said second table in alignment with thedischarge end of the first table, reciprocating plates mounted on thework-receiving means, pins mounted in the plates for projecting boardfrom work-receiving means, wringer rolls positioned at 0pp0 site ends ofthe work-receiving means for feed ing boards toward the ends or" thesecond table, means for carrying boards away from the lastmentionedwringer rolls, and means positioned along the second table for engagingthe boards as they travel therealong for rabbeting the board on thesides.

PAUL H. KINPORTS.

